CN111663903A - Compound type reaming bit - Google Patents
Compound type reaming bit Download PDFInfo
- Publication number
- CN111663903A CN111663903A CN202010743598.9A CN202010743598A CN111663903A CN 111663903 A CN111663903 A CN 111663903A CN 202010743598 A CN202010743598 A CN 202010743598A CN 111663903 A CN111663903 A CN 111663903A
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- CN
- China
- Prior art keywords
- water
- drill bit
- bit body
- reaming
- drill
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 150000001875 compounds Chemical class 0.000 title claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000005553 drilling Methods 0.000 claims abstract description 25
- 239000002131 composite material Substances 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 229910003460 diamond Inorganic materials 0.000 claims description 8
- 239000010432 diamond Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000005065 mining Methods 0.000 claims description 3
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 3
- 239000003245 coal Substances 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 description 9
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008961 swelling Effects 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
- E21B10/322—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools cutter shifted by fluid pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a composite type hole expanding drill bit in the technical field of coal mine drilling, which comprises a drill bit body, wherein a high-pressure water channel is arranged in the drill bit body and is communicated with a high-pressure water source in a drill rod; the non-water-swelling type reaming piece is connected to the drill bit body in an annular mode, and a swing gap is reserved between the non-water-swelling type reaming piece and the outer circular surface of the drill bit body. The device is not easy to jam, convenient to withdraw the drill, long in service life, high in reaming efficiency and beneficial to reducing the reaming cost.
Description
Technical Field
The invention belongs to the technical field of coal mine drilling, and particularly relates to a composite type reaming bit.
Background
Before coal mine collection, a hole needs to be drilled for gas extraction, a hole needs to be drilled from a rock layer to a coal seam during drilling, and in order to save drilling cost and increase gas extraction efficiency, the hole needs to be reamed under the condition that the hole diameter of a rock layer drilling section is not changed, so that the surface area of an inner hole of the coal seam is enlarged, and the gas overflow efficiency is improved.
The existing hole expanding drill bit is generally used for expanding holes through a hole expanding arm, the hole expanding effect is not ideal due to the fact that the hole expanding arm is arranged, a drill rod is driven by a motor, the rotating speed reaches 500r/min, stress impact on a connecting portion of the hole expanding arm and the drill rod in the hole expanding process is large, fatigue damage is easy to occur, and large coal particles are easily clamped between the hole expanding arm and the drill rod when the hole expanding arm contracts, so that contraction is not in place, the back drilling is influenced, the hole expanding cost is increased, and the hole expanding construction efficiency of drilling cannot be guaranteed.
Therefore, need to improve current reamer bit to improve reaming device's reliability, reduce the reaming cost, guarantee the reaming efficiency of coal mine drilling.
Disclosure of Invention
In order to solve the technical problem, the invention provides a composite type reaming bit, which comprises a bit body, wherein a high-pressure water channel is arranged in the bit body, a threaded inner hole for connecting a drill rod is formed in one end of the bit body, the high-pressure water channel is communicated with a high-pressure water source in the drill rod, a plurality of flexible reaming pieces are axially arranged on the outer circular surface of the bit body at intervals, each flexible reaming piece comprises a water-swelling type reaming piece and a non-water-swelling type reaming piece, the water-swelling type reaming pieces and the non-water-swelling type reaming pieces are arranged on the bit body in a staggered mode or in a partitioned mode, one end of each water-swelling type reaming piece is connected to the bit body, the other end of each water-swelling type reaming piece is a free end, a high-pressure hose penetrates through the water-swelling type reaming pieces, one end of each high-pressure hose is communicated with the high; the non-water-swelling type reaming piece is connected to the drill bit body in an annular mode, and a swing gap is reserved between the non-water-swelling type reaming piece and the outer circular surface of the drill bit body.
Preferably, one end of the drill bit body, which is far away from the drill rod, is provided with a drill point, the drill point is provided with a drill edge, and the drill edge is provided with a tungsten carbide and diamond composite wear-resistant layer. The purpose of drilling deep and reaming at the same time can be realized, and the reaming efficiency is further improved.
Preferably, the drill bit body is provided with a starting expansion area and a final expansion area, the final expansion area is arranged at one end, close to the drill rod, of the drill bit body, the water-swelling type hole expanding piece is arranged in the final expansion area, the starting expansion area is arranged at one end, close to the drill tip, of the drill bit body, the non-water-swelling type hole expanding piece is arranged in the starting expansion area, close to the drill tip, of the drill bit body, and the inertia of the non-water-swelling type hole expanding piece is used for initial hole expansion, so that the initial hole expanding efficiency; the drill bit body is close to the final reaming area of the drill bit end and is provided with the water expansion type reaming piece, and the water expansion characteristic is utilized to enable the water expansion type reaming piece to be rapidly unfolded in the space after initial reaming, so that the later-stage reaming efficiency is improved.
Preferably, the closer the flexible reaming piece is to the drill point, the smaller the reaming radius is, so that progressive reaming is realized, the service life of the device is prolonged, and the reaming efficiency of the device is ensured.
Preferably, one side equipartition that non-water bloated formula reaming piece is close to the drill bit body has 2 ~ 6 flexonics spare, flexonics spare is kept away from one end of non-water bloated formula reaming piece and is connected on the excircle face of drill bit body. Through flexible connectors, make the device when the irrotational, the water swelling formula reaming piece of non-warp in a flexible way, be convenient for advance in drilling or move back the brill, when the device is rotatory, guarantee that water swelling formula reaming piece of non-throws away the drill bit body fast under the inertia and carry out the reaming operation, firmly pull water swelling formula reaming piece of non-simultaneously and in suitable radius range, guarantee that reaming aperture reaches the designing requirement.
Preferably, the flexible connecting piece is a connecting chain or a steel wire rope, so that the firmness and durability of the connection of the non-water-swelling type hole expanding piece can be guaranteed.
Preferably, the high-pressure hose is an armored metal hose, so that the service life of the high-pressure hose is prolonged, and the reliability of the device is improved.
Preferably, be equipped with spiral baffle box on the outer disc of drill bit body, make things convenient for the guide, be favorable to improving reaming efficiency.
Preferably, the flexible reaming piece adopts a chain throwing or a steel cable, and a diamond compact is arranged on the outer surface of the chain throwing or the steel cable. Adopt and get rid of chain or steel cable, realize flexible reaming, solved among the prior art easy problem of jam, fragile of reaming arm, be favorable to improving the wearability of getting rid of chain or steel cable through setting up diamond compact piece, increase of service life improves the reliability of device.
Preferably, the chain throwing device adopts a mining high-strength circular ring chain, and is high in hole expanding capacity and long in service life.
The present invention also includes other components that enable the composite reamer head to be used normally, all by conventional means in the art, and in addition, the devices or components that are not limited in the present invention are all by conventional means in the art.
This compound reamer bit, pass through the drilling rod drive during the use, when the drilling rod is rotatory, flexible reaming piece on the drill bit body throws under the inertia effect, realize the gradual expansion formula reaming to drilling, after letting in high pressure water source in the drilling rod, in high pressure water gets into high pressure hose along with high pressure water channel, high pressure hose realizes expanding under the drive of high pressure water and stretches, thereby it stretches to drive synchronous expanding of water expansion formula reaming piece, thereby the reaming rigidity of water expansion formula reaming piece has been improved, be favorable to improving reaming efficiency, when the one end that keeps away from the drill bit body as high pressure hose is equipped with high pressure nozzle, can play supplementary water conservancy reaming's purpose, further improve reaming efficiency. After the reaming is finished, the pressure relief of the high-pressure hose is finished, and the flexible reaming piece cannot generate the problem of jamming of coal particles, so that the flexible reaming piece can realize easy back drilling, the reliability of the reaming device can be improved, the reaming cost can be reduced, and the reaming efficiency of coal mine drilling can be ensured.
The invention has the advantages of difficult jamming, convenient drill withdrawal, long service life, high reaming efficiency and contribution to reducing the reaming cost.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a partially enlarged schematic view of the structure of the G portion in fig. 1.
Detailed Description
The present invention will be described more clearly with reference to the accompanying drawings, which are included to illustrate and not to limit the present invention. All other embodiments, which can be obtained by those skilled in the art without any inventive step based on the embodiments of the present invention, should be included in the scope of the present invention.
Example 1
As shown in fig. 1-2, the invention provides a composite reaming bit, which comprises a bit body 1, wherein a high-pressure water channel 2 is arranged in the bit body 1, a threaded inner hole 3 for connecting a drill rod is arranged at one end of the bit body 1, the high-pressure water channel 2 is communicated with a high-pressure water source in the drill rod, a plurality of flexible reaming pieces are axially arranged on the outer circumferential surface of the bit body 1 at intervals, each flexible reaming piece comprises a water-swelling reaming piece 4 and a non-water-swelling reaming piece 5, the water-swelling reaming pieces 4 and the non-water-swelling reaming pieces 5 are arranged on the bit body 1 in a partitioned manner, one end of each water-swelling reaming piece 4 is connected to the bit body 1, the other end of each water-swelling reaming piece is a free end, a high-pressure hose 9 penetrates through the water-swelling reaming piece 4, one end of each high-pressure hose 9 is communicated with the high-pressure water channel, and the other; the non-water-swelling type reaming piece 5 is connected to the drill bit body 1 in an annular mode, and a swing gap is reserved between the non-water-swelling type reaming piece 5 and the outer circular surface of the drill bit body 1. The drill bit comprises a drill bit body 1 and is characterized in that a drill tip 6 is arranged at one end, away from a drill rod, of the drill bit body 1, a drill edge is arranged on the drill tip 6, and a tungsten carbide and diamond composite wear-resistant layer is arranged on the drill edge. The purpose of drilling deep and reaming at the same time can be realized, and the reaming efficiency is further improved. The drill bit body 1 is provided with a starting expansion area and a final expansion area, the final expansion area is arranged at one end, close to a drill rod, of the drill bit body 1, the water-swelling type hole expanding piece 4 is arranged in the final expansion area, the starting expansion area is arranged at one end, close to a drill point 6, of the drill bit body 1, the non-water-swelling type hole expanding piece 5 is arranged in the starting expansion area, close to the drill point, of the drill bit body 1, and the non-water-swelling type hole expanding piece 5 is used for carrying out initial hole expansion by utilizing inertia of the non-water-swelling type hole expanding piece 4 to ensure initial hole expansion efficiency; set up water bloated formula reaming piece 4 in the end of drill bit body 1 is close to the drill rod end and expands the district, utilizes the characteristic that water expands to make water bloated formula reaming piece 4 expand fast in the space after initial reaming, is favorable to improving the reaming efficiency in later stage.
The closer the flexible hole expanding piece is to the drill point 6, the smaller the hole expanding radius is, so that progressive hole expanding is realized, the service life of the device is prolonged, and the hole expanding efficiency of the device is ensured. One side equipartition that non-water bloated formula reaming piece 5 is close to drill bit body 1 has 2 flexonics spare 7, flexonics spare 7 is kept away from non-water bloated formula reaming piece 5 one end and is connected on the outer disc of drill bit body 1. Through flexible connectors 7, make the device when the irrotational, non-water bloated formula reaming piece 5 warp in a flexible way, is convenient for advance in drilling or move back and bores, when the device was rotatory, guarantees that non-water bloated formula reaming piece 5 gets rid of the drill bit body fast under the inertia and carries out the reaming operation, firmly pulls non-water bloated formula reaming piece 5 simultaneously in suitable radius range, guarantees that the reaming aperture reaches the designing requirement. The flexible connecting piece 7 is a connecting chain or a steel wire rope, and is favorable for ensuring the firmness and durability of the connection of the non-water-swelling type reaming piece 5. The high-pressure hose 9 is made of an armored metal hose, so that the service life of the high-pressure hose 9 is prolonged, and the reliability of the device is improved. Be equipped with spiral baffle box 8 on the outer disc of drill bit body 1, make things convenient for the guide, be favorable to improving reaming efficiency. The flexible reaming piece adopts a throwing chain 10, and a diamond compact sheet 11 is arranged on the outer surface of the throwing chain 10. Adopt to get rid of chain 10 and realize flexible reaming, solved among the prior art easy problem of jam, fragile of reaming arm, be favorable to improving the wearability of getting rid of chain 10 through setting up diamond compact piece 11, increase of service life improves the reliability of device. The chain 10 adopts a mining high-strength round-link chain, and has strong hole expansion capacity and long service life.
This compound reamer bit, pass through the drilling rod drive during the use, when the drilling rod is rotatory, flexible reaming piece on the bit body 1 throws under the inertia effect, realize the gradual expansion formula reaming to drilling, after letting in high pressure water source in the drilling rod, the water under high pressure gets into in the high pressure hose 9 along with high pressure water channel, high pressure hose 9 realizes expanding under the drive of water under high pressure, thereby it stretches to drive the synchronous expansion of water expansion formula reaming piece 4, thereby the reaming rigidity of water expansion formula reaming piece 4 has been improved, be favorable to improving reaming efficiency, the one end that bit body 1 was kept away from to high pressure hose 9 is equipped with high pressure nozzle, can play supplementary water conservancy reaming's mesh, further improve reaming efficiency. After reaming, treat that high-pressure hose 9 release pressure finishes, the flexible reaming piece can not take place the problem of coal grain jam, therefore can realize easily moving back the brill to can improve reaming device's reliability, be favorable to reducing the reaming cost, and guarantee the reaming efficiency of colliery drilling.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the illustrated embodiments.
Claims (10)
1. The utility model provides a compound reamer bit, includes the drill bit body, this internal high pressure water channel that is equipped with of drill bit, the one end of drill bit body is equipped with the screw thread hole that is used for connecting the drilling rod, high pressure water channel is linked together its characterized in that with the high pressure water source in the drilling rod: the drill bit comprises a drill bit body and is characterized in that a plurality of flexible hole expanding pieces are arranged on the outer circular surface of the drill bit body at intervals along the axial direction, the flexible hole expanding pieces comprise water-swelling hole expanding pieces and non-water-swelling hole expanding pieces, the water-swelling hole expanding pieces and the non-water-swelling hole expanding pieces are arranged on the drill bit body in a staggered mode or in a partitioned mode, one end of each water-swelling hole expanding piece is connected to the drill bit body, the other end of each water-swelling hole expanding piece is a free end, a high-pressure hose penetrates through the water-swelling hole expanding pieces, one end of each high-pressure hose is communicated with a high-pressure water channel; the non-water-swelling type reaming piece is connected to the drill bit body in an annular mode, and a swing gap is reserved between the non-water-swelling type reaming piece and the outer circular surface of the drill bit body.
2. A compound reamer bit according to claim 1, wherein: the drill bit body is provided with a drill point at one end far away from the drill rod, the drill point is provided with a drill edge, and the drill edge is provided with a tungsten carbide and diamond composite wear-resistant layer.
3. A compound reamer bit according to claim 2, wherein: the drill bit body is provided with an initial expanding area and a final expanding area, the final expanding area is arranged at one end, close to the drill rod, of the drill bit body, the water expansion type hole expanding piece is arranged in the final expanding area, the initial expanding area is arranged at one end, close to the drill tip, of the drill bit body, and the non-water expansion type hole expanding piece is arranged in the initial expanding area.
4. A compound reamer bit according to claim 2, wherein: the closer the flexible reaming piece is to the drill tip, the smaller the reaming radius.
5. A compound reamer bit according to claim 1, wherein: one side equipartition that non-water bloated formula reaming piece is close to the drill bit body has 2 ~ 6 flexonics spare, flexonics spare keeps away from the one end of non-water bloated formula reaming piece and connects on the outer disc of drill bit body.
6. The compound reamer bit of claim 5, wherein: the flexible connecting piece is a connecting chain or a steel wire rope.
7. A compound reamer bit according to claim 1, wherein: the high-pressure hose is an armored metal hose.
8. A compound reamer bit according to claim 1, wherein: and a spiral guide chute is arranged on the outer circular surface of the drill bit body.
9. The compound reamer bit of any one of claims 1 to 8, wherein: the flexible reaming piece adopts and gets rid of chain or steel cable, be equipped with the diamond compact piece on the surface of getting rid of chain or steel cable.
10. A compound reamer bit according to claim 9, wherein: the swinging chain adopts a mining high-strength round-link chain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010743598.9A CN111663903A (en) | 2020-07-29 | 2020-07-29 | Compound type reaming bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010743598.9A CN111663903A (en) | 2020-07-29 | 2020-07-29 | Compound type reaming bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111663903A true CN111663903A (en) | 2020-09-15 |
Family
ID=72392721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010743598.9A Pending CN111663903A (en) | 2020-07-29 | 2020-07-29 | Compound type reaming bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111663903A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU945346A1 (en) * | 1980-10-23 | 1982-07-23 | Тольяттинский политехнический институт | Apparatus for expanding boreholes |
| CA2162792A1 (en) * | 1994-11-29 | 1996-05-30 | Alan L. Nackerud | Cavern well completion method and apparatus |
| WO2001077445A1 (en) * | 2000-04-11 | 2001-10-18 | Stump Spezialtiefbau Gmbh | Method and device for the production of back-cut cavities |
| CN202733225U (en) * | 2012-08-06 | 2013-02-13 | 吕飞龙 | Novel telescopic water pipe |
| CN106761410A (en) * | 2016-12-16 | 2017-05-31 | 河南宇建科技股份有限公司 | A kind of binary channels is bored and develops integrated device |
| CN212642605U (en) * | 2020-07-29 | 2021-03-02 | 河南理工大学 | Compound type reaming bit |
-
2020
- 2020-07-29 CN CN202010743598.9A patent/CN111663903A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU945346A1 (en) * | 1980-10-23 | 1982-07-23 | Тольяттинский политехнический институт | Apparatus for expanding boreholes |
| CA2162792A1 (en) * | 1994-11-29 | 1996-05-30 | Alan L. Nackerud | Cavern well completion method and apparatus |
| WO2001077445A1 (en) * | 2000-04-11 | 2001-10-18 | Stump Spezialtiefbau Gmbh | Method and device for the production of back-cut cavities |
| CN202733225U (en) * | 2012-08-06 | 2013-02-13 | 吕飞龙 | Novel telescopic water pipe |
| CN106761410A (en) * | 2016-12-16 | 2017-05-31 | 河南宇建科技股份有限公司 | A kind of binary channels is bored and develops integrated device |
| CN212642605U (en) * | 2020-07-29 | 2021-03-02 | 河南理工大学 | Compound type reaming bit |
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